I once spent a fruitless half-hour trying to explain ‘Mornington Crescent’ to a German guest. A game with no rules, or rules that can only be understood as meaningless, was beyond his comprehension, until I mentioned Kafka. Then he got it. Quote; “So, the British invented post-modernism, not the French! That is good!"

I once met Humph Lyttleton at a party and he sent me a written copy of Mornington Crescent rules - it's very detailed but much less complex than it appears on the show once you've read through them properly.

If anyone is interested, PM me if you want a copy and I'll pop one in the post....